Spread the Options Activate the R-Option and collect enough power-ups so that the option selection is highlighted. Now press and hold the A button.
Extended Demo Mode Continue to hold A through the initial demo, and you'll see the entire first stage including the boss.
Cheat Mode Use one of the following codes...
Code: | Result: | In the Options menu, highlight the Game Level, and rapidly tap the A BUTTON until the level turns into ARCADE. | Arcade Mode | At the title screen, hold L and press A, A, A, Start | Extra 30 Ships | At the title screen, press the X button as many times as you can and then press start before the screen fades out. | Extra Credits | Pause the game and press Up, Up, Down, Down, L, R, L, R, B, A | Full Power-Up | During gameplay, pause the game and press Up, Up, Down, Down, L, R, L, R, B, A. | Full Power-Up | At the weapon select screen, press Right on the D-pad to enter Edit Mode. Then press X, Y, X, X, Y, Y, X, Y | Random Weapon Select | Hold L + R and Start, then press Select. | Reset | Pause the game and press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start. | Suicide | During gameplay, pause the game and press Up, Up, Down, Down, Left, Right, Left, Right, B, A. | Suicide |
Full Power Up w/o using the code Choose "speed down" for the "!" option in the weapon select screen, if you can get enough power ups to highlight the last weapon, which will not be visible, and using it without powering up on speed up, you will get all four options, missiles, and the shield. But if you have the laser already, it will be taken away. |